10,236 research outputs found
Deep Learning for Single Image Super-Resolution: A Brief Review
Single image super-resolution (SISR) is a notoriously challenging ill-posed
problem, which aims to obtain a high-resolution (HR) output from one of its
low-resolution (LR) versions. To solve the SISR problem, recently powerful deep
learning algorithms have been employed and achieved the state-of-the-art
performance. In this survey, we review representative deep learning-based SISR
methods, and group them into two categories according to their major
contributions to two essential aspects of SISR: the exploration of efficient
neural network architectures for SISR, and the development of effective
optimization objectives for deep SISR learning. For each category, a baseline
is firstly established and several critical limitations of the baseline are
summarized. Then representative works on overcoming these limitations are
presented based on their original contents as well as our critical
understandings and analyses, and relevant comparisons are conducted from a
variety of perspectives. Finally we conclude this review with some vital
current challenges and future trends in SISR leveraging deep learning
algorithms.Comment: Accepted by IEEE Transactions on Multimedia (TMM
Field-Induced Resistive Switching in Metal-Oxide Interfaces
We investigate the polarity-dependent field-induced resistive switching
phenomenon driven by electric pulses in perovskite oxides. Our data show that
the switching is a common occurrence restricted to an interfacial layer between
a deposited metal electrode and the oxide. We determine through impedance
spectroscopy that the interfacial layer is no thicker than 10 nm and that the
switch is accompanied by a small capacitance increase associated with charge
accumulation. Based on interfacial I-V characterization and measurement of the
temperature dependence of the resistance, we propose that a field-created
crystalline defect mechanism, which is controllable for devices, drives the
switch.Comment: 4 pages, 3 figure
Oxidative stress-mediated reperfusion injury: mechanism and therapies
published_or_final_versio
- …